package com.usian.controller;

import com.usian.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RequestMapping("/user")
@RestController
public class UserController {

    @Autowired
    private RestTemplate restTemplate;  //原生的服务调用

    //从Nacos注册中心获取服务端的ip、端口、要调用的服务
    @Autowired
    private LoadBalancerClient loadBalancerClient;


    @RequestMapping("/findUserById")
    public User getUserBy(Integer userId){
        ServiceInstance si = loadBalancerClient.choose("nacos-provider");
        //指定要调用的服务
        String url = "http://"+si.getHost()+":"+si.getPort()+"/user/findUserByUserId/"+userId;
        //发起请求

        return restTemplate.getForObject(url, User.class);
    }

}
